I had a similar issue using a Lamy Safari (which I enjoy) with Noodler's Black ink (which is great for writing, but not for drawing). When I would ink a picture and then erase the pencil, the Noodler's black ink would smudge on the page. I now use Platinum Carbon ink in my Lamy Safari for drawing and have not had any issues with this waterproof ink. I still use the Noodler's for writing, but not for drawing.
I had a similar issue using a Lamy Safari (which I enjoy) with Noodler's Black ink (which is great for writing, but not for drawing). When I would ink a picture and then erase the pencil, the Noodler's black ink would smudge on the page. I now use Platinum Carbon ink in my Lamy Safari for drawing and have not had any issues with this waterproof ink. I still use the Noodler's for writing, but not for drawing.